content: /*
   * Copyright 2017 David Karnok
   *
   * Licensed under the Apache License, Version 2.0 (the "License");
   * you may not use this file except in compliance with the License.
   * You may obtain a copy of the License at
   *
   *     http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   */
  
  package hu.akarnokd.reactive4javaflow.impl.operators;
  
  import hu.akarnokd.reactive4javaflow.*;
  import hu.akarnokd.reactive4javaflow.functionals.AutoDisposable;
  import hu.akarnokd.reactive4javaflow.processors.*;
  import org.junit.Test;
  
  import java.util.*;
  import java.util.concurrent.*;
  import java.util.stream.*;
  
  import static org.junit.Assert.*;
  
  public class FolyamBlockingStreamTest {
      @Test
      public void normal() {
          List<Integer> list = Folyam.range(1, 5)
                  .blockingStream()
                  .limit(3)
                  .collect(Collectors.toList());
  
          assertEquals(Arrays.asList(1, 2, 3), list);
      }
  
      @Test
      public void normal2() {
          List<Integer> list = Folyam.range(1, 5)
                  .blockingStream(1)
                  .limit(3)
                  .collect(Collectors.toList());
  
          assertEquals(Arrays.asList(1, 2, 3), list);
      }
  
      @Test(timeout = 1000)
      public void asyncSupplied() throws Exception {
          DirectProcessor<Integer> dp = new DirectProcessor<>();
          CountDownLatch cdl = new CountDownLatch(1);
  
          AutoDisposable d = SchedulerServices.single().schedule(() -> {
              while (!dp.hasSubscribers()) {
                  try {
                      Thread.sleep(1);
                  } catch (InterruptedException ex) {
                      cdl.countDown();
                      return;
                  }
              }
  
              for (int i = 1; i < 6; i++) {
                  if (!dp.tryOnNext(i)) {
                      try {
                          Thread.sleep(1);
                      } catch (InterruptedException ex) {
                          cdl.countDown();
                          return;
                      }
                  }
              }
  
              while (dp.hasSubscribers()) {
                  try {
                      Thread.sleep(1);
                  } catch (InterruptedException ex) {
                      cdl.countDown();
                      return;
                  }
              }
  
              cdl.countDown();
          });
  
          try (d) {
              try (Stream<Integer> st = dp.blockingStream()
                      .limit(3)) {
                  List<Integer> list = st
                          .collect(Collectors.toList());
  
                  assertEquals(Arrays.asList(1, 2, 3), list);
              }
              assertTrue(cdl.await(5, TimeUnit.SECONDS));
          }
      }
  }
  